height NISSAN ALMERA N15 1995 User Guide

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS

Heated Oxygen Sensor(H02S)(Cont'd)

@

Loosen andretighten engineground
screws.

OK

CHECK COMPONENT
(Heated oxygensensorheater).
Refer to"COMPONENT INSPECTION"
below.

OK

Disconnect andreconnect harnesscon-
ne~tors inthe circuit. Thenretest.
Trouble isnot fixed.
Check ECMpinterminals fordamage
or the connection ofECM harness con-
nector. Reconnect ECMharness con-
nector andretest.
Troubleisnot fixed.
Replace heatedoxygen sensor.

COMPONENT INSPECTION NG

Replace heatedoxygen
sensor.

•

DISCONNECT
I~J

00
SEF586Q
Heated
oxygen sensorheater

Check resistance betweenterminals
@
and
CD.

Resistance: 2.3-4.3Q at25°C (77°F)

Check continuity betweenterminals @and
CD,
@
and @.

Continuity shouldnotexist.

If NG, replace theheated oxygen sensor.
CAUTION:

• Discard anyoxygen sensorwhichhasbeen dropped from
a height ofmore than0.5m(19.7 in)onto ahard surface
such asaconcrete floor;useanew one.

EC-193

•

Repair
harness orcon-
nectors.

NG
OK

Loosen andretighten engineground
screws. CHECK
INPUTSIGNAL CIRCUIT.
1. Stop engine.
2. Disconnect ECMharness connector
and oxygen sensorharness connec-
tor.
3. Check harness continuity between
ECM terminal
@
or
@
and terminal

CD.

Continuity shouldexist.

If OK, check harness forshort.

~iV
@

TROUBLE
DIAGNOSIS FORNON-DETECTABLE ITEMS
Oxygen Sensor(02S)(Conl'd)
@

~Io

ECM
19'
CONNECTOR
II

46 19

II

OK

Disconnect andreconnect harnesscon-
nectors inthe circuit. Thenretest.

@:
ForAustralia M/Tmodels

@:
Except forEurope andIsrael
SEF182R
Trouble
isnot fixed.
Check ECMpinterminals fordamage
or the connection ofECM harness con-
nector. Reconnect ECMharness con-
nector andretest.
Troubleisnot fixed.
Replace oxygensensor.

CAUTION:
• Discard anyoxygen sensorwhichhasbeen dropped from
a height ofmore than0.5m(19.7 in)onto ahard surface
such asaconcrete floor;useanew one.
EC-197

SLC904

CD

@

10~~103~ \

~' ENGINE
COOLING SYSTEM
I
GA, SR,CD
I

Radiator (Aluminum type)(Cont'd)

4. Caulk tankinspecified sequence withTool.

•

Keep toolperpendicular to
the radiator.
o

X

(Grip isinsufficient.)

SLC896

• Use pliers inthe locations whereToolcannot beused.
5. Make surethattherim iscompletely crimpeddown.

Standard height
"H":

8.0 -8.4 mm (0.315 -0.331 in)

6. Confirm thatthere isno leakage.

Refer toInspection.
INSPECTION

Apply pressure withTool.

Specified pressurevalue:
157 kPa (1.57 bar,1.6kg/cm
2,
23psi)
WARNING:
To prevent therisk ofthe hose coming undonewhileunder
pressure, securelyfastenitdown withahose clamp.
Attach ahose tothe oilcooler aswell.
(A
IT models only)
SLC933 LC-39

CYLINDERHEAD
CAUTION:
• When installing camshaft, oilseals orother sliding parts,
lubricate contacting surfaceswithnewengine oil.
• When tightening cylinderheadbolts, camshaft sprocket
bolts andcamshaft bracketbolts,lubricate threadportions
and seat surfaces ofbolts withnewengine oil.
• Attach tagstovalve lifters soas not tomix them up.
Removal

• This removal isthe same procedure asthose fortiming
chain. Referto"Removal" in"TIMING CHAIN"(EM-20).

Disassembly
1. Remove valvecomponents withTool.
2 .. Remove valveoilseal withasuitable tool.

Inspection
CYLINDER HEADDISTORTION

Clean surface ofcylinder head.
Use areliable straightedge andafeeler gauge tocheck the
flatness ofcylinder headsurface.
Check alongsixpositions showninfigure.

Head surface flatness:
Standard:
Less than0.03mm(0.0012 in)
Limit: 0.1 mm (0.004 in)

If beyond thespecified limit,replace itor resurface it.

Resurfacing limit:
The resurfacing limitofcylinder headisdetermined bythe cyl-
inder block resurfacing inan engine.
Amount ofcylinder headresurfacing is
"A".

Amount ofcylinder blockresurfacing is
"8".

The maximum limitisas follows:
A +8
=
0.2 mm (0.008 in)

After resurfacing cylinderhead,check thatcamshaft rotates
freely byhand. Ifresistance isfelt, cylinder headmust be
replaced.
Nominal cylinderheadheight:
117.8 -118.0 mm(4.638 .4.646 in)
CAMSHAFT VISUALCHECK

Check camshaft forscratches, seizureandwear.

EM-34

SEM154D
SEM549A CYLINDER
HEAD
Inspection (Cont'd)
CAMSHAFT RUNOUT

1. Measure camshaft runoutatthe center journal.

Runout (Totalindicator reading):
Standard: Less than0.02mm(0.0008 in)
Limit: 0.1 mm (0.004 in)

2. Ifitexceeds thelimit, replace camshaft.

CAMSHAFT CAMHEIGHT

1. Measure camshaft camheight.
Unit:mm(in)

GA16DE GA16DE
GA16DE
Engine model GA14DEGA15DE
withoutwith
VTC withVTC
for Aus- except
for
VTC traliaAustralia
39.880 -39.380 -
Intake 40.070
39570 40.610
-40.800
39.380 -(1.5701
-(1.5504 -(1.5988 -1.6063)
Standard 39.5701.5776)
1.5579)
cam height (1.5504-
40.056 -39.880 -39.910 -40.056
-
1.5579) 40.24640.07040.01040.246
Exhaust (1.5770-(1.5701
-(1.5713 -(1.5770
-
1.5845) 1.5776}1.5752)
1.5845}
Cam wear limit 0.20
(O.0079)

2. Ifwear isbeyond thelimit, replace camshaft.
•

CAMSHAFT JOURNALCLEARANCE

1. Install camshaft bracketandtighten boltstothe specified
torque.
2. Measure innerdiameter ofcamshaft bearing.

Standard innerdiameter:
No. 1bearing
28.000.28.021 mm(1.1024.1.1032 in)
No. 2to No. 5bearings
24.000 •24.021 mm(0.9449 .0.9457 in)

3. Measure outerdiameter ofcamshaft journal.

Standard outerdiameter:
No.1 journal
27.935.27.955 mm(1.0998 .1.1006 in)
No.2 toNo.5 journals
23.935 -23.955 mm(0.9423 •0.9431 in)

4. Ifclearance exceedsthelimit, replace camshaft and/orcyl-
inder head.

Camshaft journalclearance:
Standard 0.045 •0.086 mm(0.0018 •0.0034 in)
Limit 0.15 mm(0.0059 in)
EM-3S

T(Margin thickness)

--1,-

ml
a

III' ~

o

~-
-L
d
SEM8928

I
.\

SEM188A
CYLINDER
HEAD

Inspection (Conl'd)

3. Heat cylinder headto110 to120°C (230to248°F).
4. Press fitvalve seatuntilitseats onthe bottom .
5. Cut orgrind valve seatusing suitable toolatthe specified
dimensions asshown inSOS (EM-159).
6. After cutting, lapvalve seatwithabrasive compound.
7. Check valveseating condition.
Seat faceangle "a":
45°15' -45°45' deg.
Contacting width"W":
Intake
1.06 -1.34 mm(0.0417 -0.0528 in)
Exhaust
1.20 -1.68 mm(0.0472 -0.0661 in)

VALVE DIMENSIONS

Check dimensions ineach valve. Fordimensions, refertoSOS
(EM-156).
When valveheadhasbeen worn down to0.5 mm (0.020 in)in
margin thickness, replacevalve.
Grinding allowance forvalve stemtipis0.2 mm (0.008 in)or
less.
•

SEM288A VALVE
SPRING

Squareness
1. Measure "S"dimension.
Out-of-square: Less than1.80mm(0.0709 in)
2. Ifitexceeds thelimit, replace spring.

EM113
Pressure

Check valvespring pressure.
Pressure: N(kg, Ib)atheight mm(in)
Standard 344.42 (35.12, 77.44)at25.26 (0.9945)
Limit More than323.73 (33.01, 72.79)at25.26 (0.9945)
If itexceeds thelimit, replace spring.

EM-39

ENGINEREMOVAL
mJ

Removal (Cont'd)

• Disconnect controlrodand support rodfrom transaxle.
(M/T

models)
Control rod:

to:J:
14-18 N.m (1.4-1.8 kg-m, 10-13 ft-Ib)
Support rod:

to:J:
35-47 N.m (3.6-4.8 kg-m, 26-35 ft-Ib)

• Disconnect controlcablefromtransaxle.
(A/Tmodels)

• Center member
• Front exhaust tube
• Stabilizer
• Cooling fan
• Radiator
• Cylinder headfrontmounting bracket
• Remove airduct anddisconnect wires,harness, pipes,
hoses andsoon.
8. Lift upengine slightly anddisconnect orremove allengine
mountings.

When liftingengine, becareful nottohit itagainst adjacent
parts, especially againstbraketubesandbrake master cylin-
der.

9. Remove enginewithtransaxle asshown.

Installation
When installing theengine, adjusttheheight ofbuffer rodas
shown. (ForM/T)

• Installation isthe reverse orderofremoval.

EM-46

SEM003FCYLINDER
BLOCK
Inspection (Cont'd)
Feeler gauge Straightedge
SEM102F

I
I

,

,

!

,

A

X-V
B
Unit:
mm
(In)

SEM166DA CYLINDER
BLOCKDISTORTION ANDWEAR

1. Clean upperfaceofcylinder blockandmeasure thedistor-
tion.
Limit: 0.10 mm(0.0039 in)

2. Ifout ofspecification, resurface
it.

The resurfacing limitisdetermined bycylinder headresur-
facing inengine.

Amount ofcylinder headresurfacing is
"A".

Amount ofcylinder blockresurfacing is
"B".

The maximum limitisas follows:

A
+
B
= 0.2 mm (0.008 in)
Nominal cylinderblockheight
from crankshaft center:
213.95 -214.05 mm(8.4232 .8.4271 in)

3. Ifnecessary, replacecylinder block.

PISTON- TO-BORE CLEARANCE

1. Using abore gauge, measure cylinderboreforwear, out-
of-round andtaper.

Standard innerdiameter:
GA16DE 76.000-76.030 mm(2.9921 -2.9933 in)
GA14, 15DE73.600 -73.630 mm(2.8976 -2.8988 in)
Wear limit:
0.2 mm (0.008 in)

If itexceeds thelimit, rebore allcylinders. Replacecylinder
block ifnecessary.

Out-of-round (X-Y) standard:
0.015 mm(0.0006 in)
Taper (A-B) standard:
0.01 mm(0.0004 in)
EM-50

SEM925CCYLINDER
HEAD
Disassembly (Cont'd)

12. Remove valveoilseal with asuitable tool.

Inspection
CYLINDER HEADDISTORTION
. Head surface flatness:
Standard Less than0.03mm(0.0012 in)
Limit
0.1 mm (0.004 in)

If beyond thespecified limit,replace orresurface.

Resurfacing limit:
The resurfacing limitofcylinder headisdetermined bythe cyl-
inder block resurfacing inan engine.
Amount ofcylinder headresurfacing is
"A".

Amount ofcylinder blockresurfacing is
"B".

The maximum limitisas follows:

A
+
B
=
0.2 mm (0.008 in)

After resurfacing cylinderhead,check thatcamshaft rotates
freely byhand. Ifresistance isfelt, cylinder headmustbe
replaced.

Nominal cylinderheadheight:
136.9 -137.1 mm(5.390 -5.398 in)
CAMSHAFT VISUALCHECK

Check camshaft forscratches, seizureandwear.

CAMSHAFT RUNOUT

1. Measure camshaft runoutatthe center journal.

Runout (Totalindicator reading):
Standard Less than0.02mm(0.0008 in)
Limit
0.1 mm (0.004 in)

2. Ifitexceeds thelimit, replace camshaft.

EM-88

SEM929CCYLINDER
HEAD ~
Inspection (Cont'd)
CAMSHAFT CAMHEIGHT

1. Measure camshaft camheight.

Standard camheight:
Intake 38.408 -38.598 mm(1.5121 .1.5196 in)
Exhaust 37.920 •38.110 mm(1.4929. 1.5004in)
Cam wear limit:
Intake
&
Exhaust
0.2 mm (0.008 in)

2. Ifwear isbeyond thelimit, replace camshaft.

CAMSHAFT JOURNALCLEARANCE

1. Install camshaft bracketandtighten boltstothe specified
torque.
2. Measure innerdiameter ofcamshaft bearing.

Standard innerdiameter:
28.000 -28.021 mm(1.1024 -1.1032 in)

Measure outerdiameter ofcamshaft journal.

Standard outerdiameter:
27.935 .27.955 mm(1.0998 -1.1006 in)

If clearance exceedsthelimit, replace camshaft and/orcyl-
inder head.

Camshaft journalclearance:
Standard 0.045 -0.086 mm(0.0018 .0.0034 in)
Limit 0.15 mm(0.0059 in)
CAMSHAFT ENDPLAY

1. Install camshaft incylinder head.
2. Measure camshaft endplay.

Camshaft endplay:
Standard 0.055. 0.139mm(0.0022 -0.0055 in)
Limit 0.20 mm(0.0079 in)
CAMSHAFT SPROCKETRUNOUT

1. Install sprocket oncamshaft.
2. Measure camshaft sprocketrunout.

Runout (Totalindicator reading):
Limit 0.25mm(0.0098 in)

3. Ifitexceeds thelimit, replace camshaft sprocket.

EM-89
•